start docs for Parameter

lib/Parameter.pod

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+=begin pod
+
+=TITLE class Parameter
+
+    class Parameter { }
+
+Represents a parameter, for purpose of introspection.
+
+=head1 Methods
+
+=head2 name
+
+Returns the variable name
+
+=head2 constraints
+
+Returns additional constraints on the parameter (usually as an
+C<all>-Junction).
+
+=head2 type
+
+Returns the nominal type constraint of the paramter
+
+=head2 named
+
+Returns C<True> if it's a named parameter
+
+=head2 named_names
+
+Returns a list of names/aliases for this parameter
+
+=head2 positional
+
+Returns C<True> if the parameter is positional.
+
+=head2 slurpy
+
+Returns C<True> for slurpy parameters
+
+=head2 optional
+
+Returns C<True> for optional parameters
+
+=end pod