code: private void obtainPressedColor(@NonNull final TypedArray typedArray) {
          int defaultPressedColor = getControlHighlightColor();
          pressedColor = typedArray
                  .getColor(R.styleable.FloatingActionButton_pressedColor, defaultPressedColor);
      }
docs: Obtains the floating action button's pressed color from a specific typed array.
  
  @param typedArray
  The typed array, the pressed color should be obtained from, as an instance of the
  class {@link TypedArray}. The typed array may not be null