code: public MaterialSection getSectionByTitle(String title) {
  
          for(MaterialSection section : sectionList) {
              if(section.getTitle().equals(title)) {
                  return section;
              }
          }
  
          for(MaterialSection section : bottomSectionList) {
              if(section.getTitle().equals(title))
                  return section;
          }
  
          return null;
      }
docs: Get a setted section knowing his title
  
  N.B. this search only into section list and bottom section list.
  @param title is the title of the section
  @return the section with title or null if the section is not founded