code: public EquivalentParameter convert(Parameter p) {
          if (p == null) return null;
          return paramCvtr.convert(p);
      }
docs: Returns an {@link EquivalentParameter} converted from the supplied
  {@link Parameter}.
  
  @param t {@link Parameter}; may be null
  @return {@link EquivalentParameter}; null if {@code p} was null