ppParamAssign :: ParamAssign -> Doc
ppParamAssign (ParamAssign ident expr)
  = ppIdent ident <+> equals <+> ppExpr expr
ppParamAssign :: ParamAssign -> Doc
ppParamAssign (ParamAssign ident expr)
  = ppIdent ident <+> equals <+> ppExpr expr
ppParamAssign (ParamAssign ident expr)
  = ppIdent ident <+> equals <+> ppExpr expr