Including Other Parameters in Validator Inputs

[jcarpinelli-bdai]

Is there any way to use other parameter values as inputs to custom validators? For example, say we have URDF and SRDF parameters, and we want to make sure they are consistent with one another in a custom validator.

robot_description_parameters:
  urdf: 
    type: string
  srdf:
    type: string
    validation:
      "robot_description_validators::srdf_compatible": [urdf]

[pac48]

This would be a nice feature to have. It is not currently supported. I'd welcome a contribution if anyone has the time. I can not look into it in the short term. This would require changes to the code generator parser, syntax checking, and validation calls.