InputParameters validParams<DefaultPostprocessorDiffusion>()
{
  InputParameters params = validParams<Kernel>();
  params.addPostprocessor("pps_name", 0.1, "The name of the postprocessor we are going to use, if the name is not found a default value of 0.1 is utlized for the postprocessor value");
  params.addParam<bool>("test_default_error", false, "Set this to true to test the hasDefaultPostprocessorValue error message");
  return params;
}