DOC Update `validate_parameter_constraints()` docstring.
@@ -37,6 +37,10 @@ def validate_parameter_constraints(parameter_constraints, params, caller_name):
- a StrOptions object, representing a set of strings
- the string "boolean"
- the string "verbose"
+ - the string "cv_object"
+ - the string "missing_values"
+ - a HasMethods object, representing method(s) an object must have
+ - a Hidden object, representing a constraint not meant to be exposed to the user
params : dict
A dictionary `param_name: param_value`. The parameters to validate against the
