code: protected Method findEjbMethod(Method controlBeanMethod, Class ejbInterface) {
          final String cbMethodName = controlBeanMethod.getName();
          final Class cbMethodReturnType = controlBeanMethod.getReturnType();
          final Class[] cbMethodParams = controlBeanMethod.getParameterTypes();
  
          Method[] ejbMethods = ejbInterface.getMethods();
          for (Method m : ejbMethods) {
              if (!cbMethodName.equals(m.getName())
                      || !cbMethodReturnType.equals(m.getReturnType())) {
                  continue;
              }
  
              Class[] params = m.getParameterTypes();
              if (cbMethodParams.length == params.length) {
                  int i;
                  for (i = 0; i < cbMethodParams.length; i++) {
                      if (cbMethodParams[i] != params[i]) break;
                  }
                  if (i == cbMethodParams.length)
                      return m;
              }
          }
          return null;
      }
docs: Find the method which has the same signature in the specified class.
  
  @param controlBeanMethod Method signature find.
  @param ejbInterface Class to search for method signature.
  @return Method from ejbInterface if found, null if not found.