code: public Section addSection(float indentation, String title, int numberDepth) {
          return addSection(indentation, new Paragraph(title), numberDepth);
      }
docs: Adds a <CODE>Section</CODE> to this <CODE>Section</CODE> and returns it.
  
  @param	indentation	the indentation of the new section
  @param	title		the title of the new section
  @param	numberDepth	the numberDepth of the section
  @return  a new Section object