Steps to reproduce:

- Create a UML Java-Platform Mopdel project and synchronize
  it with Java Application
- Create a Class digram
- Put an Class element on the diagram and name it 'MyClass'
- Insert some operations into the Class element
- Go to the source of the Class element
- Declare Inner class before operation declarations:
  -------------------------------------------------------
  public class MyClass {
    public MyClass() {
    }

    class D{
    }

    public void op1() {
    }

    public void op2() {
    }
  }
  -------------------------------------------------------

- Go to the diagram
  The operation declarations disappear from the Class element