code: private String makeSignature(ASTMethod method) {
          List<ASTType> paramTypes = new ArrayList<ASTType>();
  
          for (ASTParameter parameter : method.getParameters()) {
              paramTypes.add(parameter.getASTType());
          }
  
          return makeSignature(method.getName(), paramTypes);
      }
docs: Makes a descriptor for a given method.
  
  @param method
  @return descriptor