code: public void parseForField(GenericDeclaration genericDecl,
              String signature) {
          setInput(genericDecl, signature);
          if (!eof) {
              this.fieldType = parseFieldTypeSignature();
          }
      }
docs: Parses the generic signature of a field and creates the data structure
  representing the signature.
  
  @param genericDecl the GenericDeclaration calling this method
  @param signature the generic signature of the class