Buliderパターンについて

public static final class Builder {
        @Nullable
        private View target;
        @NotNull
        private List<View> tooltipChilds;
        private int markerPadding;
        private boolean tooltipMatchWidth;
        private float backgroundAlpha;
        private int backgroundColor;
        private boolean dismissible;
        private boolean isCircleMark;
        private int tooltipMargin;
        private int tooltipBackgroundColor;
        @Nullable
        private String tooltipBackgroundColorString;
        private int tooltipAlignment;
        private int pointerTooltipAlignment;
        private int radius;
        @Nullable
        private Function0 onDismissListener;
        @Nullable
        private Function0 onAfterDismissListener;
        @Nullable
        private Animation tooltipShowAnimation;
        @Nullable
        private Animation tooltipDismissAnimation;
        private Function1 onClickTarget;
        @NotNull
        private final Activity activity;

        @NotNull
        public final CoachMark.Builder setTarget(@NotNull View target) {
            this.target = target;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setCircleMark() {
            this.isCircleMark = true;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setMarkerPadding(int dp) {
            this.markerPadding = dp;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setOnClickTarget(@NotNull Function1 onClickTarget) {
            this.onClickTarget = onClickTarget;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setDismissible() {
            this.dismissible = true;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipAlignment(long tooltipAlignment) {
            this.tooltipAlignment = tooltipAlignment;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipPointer(long pointerTooltipAlignment) {
            this.pointerTooltipAlignment = pointerTooltipAlignment;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipBackgroundColor(int colorResource) {
            this.tooltipBackgroundColor = colorResource;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipBackgroundColor(@NotNull String colorString) {
            this.tooltipBackgroundColorString = colorString;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipMatchWidth() {
            this.tooltipMatchWidth = true;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipChilds(@NotNull List<View> tooltipChilds) {
            this.tooltipChilds = new ArrayList<>(tooltipChilds);
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipMargin(int dp) {
            this.tooltipMargin = dp;
            return this;
        }

        @NotNull
        public final CoachMark.Builder addTooltipChild(@NotNull View tooltipChild) {
            this.tooltipChilds.add(tooltipChild);
            return this;
        }

        @NotNull
        public final CoachMark.Builder setRadius(int value) {
            this.radius = value;
            return this;
        }

        private final TextView createTooltipChildText(Context context, String message) {
            int padding = ViewUtils.dpToPx(activity, 8);
            TextView textView = new TextView(context);
            textView.setLayoutParams(new ViewGroup.LayoutParams(-2, -2));
            textView.setText((CharSequence)message);
            textView.setPadding(padding, padding, padding, padding);
            return textView;
        }

        @NotNull
        public final CoachMark.Builder addTooltipChildText(@NotNull Context context, @NotNull String message, @ColorRes int textColor) {
            TextView textView = this.createTooltipChildText(context, message);
            textView.setTextColor(ContextCompat.getColor(context, textColor));
            return this.addTooltipChild((View)textView);
        }

        @NotNull
        public final CoachMark.Builder addTooltipChildText(@NotNull Context context, @NotNull String message, @NotNull String textColorString) {
            TextView textView = this.createTooltipChildText(context, message);

            try {
                textView.setTextColor(Color.parseColor(textColorString));
            } catch (IllegalArgumentException var6) {
                textView.setTextColor(ContextCompat.getColor(context, android.R.color.black));
            }

            return this.addTooltipChild((View)textView);
        }

        @NotNull
        public final CoachMark.Builder setOnDismissListener(@NotNull Function0 onDismiss) {
            this.onDismissListener = onDismiss;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setOnAfterDismissListener(@NotNull Function0 onAfterDismiss) {
            this.onAfterDismissListener = onAfterDismiss;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipShowAnimation(@NotNull Animation tooltipShowAnimation) {
            this.tooltipShowAnimation = tooltipShowAnimation;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setTooltipDismissAnimation(@NotNull Animation tooltipDismissAnimation) {
            this.tooltipDismissAnimation = tooltipDismissAnimation;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setBackgroundAlpha(float backgroundAlpha) {
            this.backgroundAlpha = backgroundAlpha;
            return this;
        }

        @NotNull
        public final CoachMark.Builder setBackgroundColor(@ColorRes int backgroundColor) {
            this.backgroundColor = backgroundColor;
            return this;
        }

        @NotNull
        public final CoachMark build() {
            final CoachMark coachMark = new CoachMark(this);
            coachMark.setTargetOnClick((View.OnClickListener)(new View.OnClickListener() {
                public final void onClick(View it) {
                    if (Builder.this.onClickTarget != null) {
                        Function1 var10000 = Builder.this.onClickTarget;
                        if (var10000 != null) {
                            Unit var2 = (Unit)var10000.invoke(coachMark);
                        }
                    } else {
                        CoachMark.dismiss$default(coachMark, (Function0)null, 1, (Object)null);
                    }

                }
            }));
            return coachMark;
        }

        @NotNull
        public final CoachMark show() {
            return this.build().show();
        }

        @NotNull
        public final Activity getActivity() {
            return this.activity;
        }

        public Builder(@NotNull Activity activity) {
            super();
            this.activity = activity;
            this.tooltipChilds = new ArrayList();
            this.backgroundAlpha = 0.5F;
            this.backgroundColor = 17170444;
            this.tooltipMargin = 5;
            this.tooltipAlignment = 2L;
            this.pointerTooltipAlignment = 2L;
            this.radius = 5;
        }

        // $FF: synthetic method
        public static final void access$setOnClickTarget$p(CoachMark.Builder $this, @Nullable Function1 var1) {
            $this.onClickTarget = var1;
        }
    }