code: Class classForMethodFQN(String fqn) {
  
          try {
              return classForName(fqn.substring(0, fqn.lastIndexOf('.')));
          } catch (Exception e) {
              return null;
          }
      }
docs: Retrieves the declaring <code>Class</code> object for the specified
  fully qualified method name, using (if possible) the classLoader
  attribute of this object's database. <p>
  
  @param fqn the fully qualified name of the method for which to
  retrieve the declaring <code>Class</code> object.
  @return the declaring <code>Class</code> object for the
  specified fully qualified method name