code: private void setMarginStart(@NonNull final FrameLayout.LayoutParams layoutParams,
                                  final int margin) {
          if (isRtlLayoutUsed()) {
              layoutParams.rightMargin = margin;
          } else {
              layoutParams.leftMargin = margin;
          }
      }
docs: Sets the start margin of specific layout params.
  
  @param layoutParams
  The layout params whose margin should be set, as an instance of the class {@link
  FrameLayout.LayoutParams}. The layout params may not be null
  @param margin
  The start margin, which should be set, in pixels as an {@link Integer} valueF