library/src/main/java/com/github/clans/fab/FloatingActionMenu.java
public void hideMenuButton(final boolean animate) {
        if (!isMenuButtonHidden() && !mIsMenuButtonAnimationRunning) {
            mIsMenuButtonAnimationRunning = true;
            if (isOpened()) {
                close(animate);
                mUiHandler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        hideMenuButtonWithImage(animate);
                    }
                }, mAnimationDelayPerItem * mButtonsCount);
            } else {
                hideMenuButtonWithImage(animate);
            }
        }
    }
public void hideMenuButton(final boolean animate) {
        if (!isMenuButtonHidden() && !mIsMenuButtonAnimationRunning) {
            mIsMenuButtonAnimationRunning = true;
            if (isOpened()) {
                close(animate);
                mUiHandler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        hideMenuButtonWithImage(animate);
                    }
                }, mAnimationDelayPerItem * mButtonsCount);
            } else {
                hideMenuButtonWithImage(animate);
            }
        }
    }
Makes the {@link FloatingActionButton} to disappear inside the {@link #FloatingActionMenu} and
sets its visibility to {@link #INVISIBLE}

@param animate if true - plays "hide animation"