revert signature of Accessibles.copy() method

no more kwds arguments, method 'merge' should be used

Change-Id: I7028d9df8b69c018dcdc0c55d3ae0f71e24ee15b

secop/params.py

@@ -60,11 +60,8 @@ class Accessible(HasProperties):
         """override with a bare value"""
         raise NotImplementedError
 
-    def copy(self, **kwds):
-        """return a (deep) copy of ourselfs
-
-        :param kwds: override given properties
-        """
+    def copy(self):
+        """return a (deep) copy of ourselfs"""
         raise NotImplementedError
 
     def updateProperties(self, merged_properties):
@@ -223,15 +220,11 @@ class Parameter(Accessible):
             else:
                 raise ProgrammingError('can not use %r as name of a Parameter' % self.name)
 
-    def copy(self, **kwds):
-        """return a (deep) copy of ourselfs
-
-        :param kwds: override given properties
-        """
+    def copy(self):
+        """return a (deep) copy of ourselfs"""
         res = type(self)()
         res.name = self.name
         res.init(self.propertyValues)
-        res.init(kwds)
         if 'datatype' in self.propertyValues:
             res.datatype = res.datatype.copy()
         return res
@@ -407,16 +400,12 @@ class Command(Accessible):
         self.func = func
         return self
 
-    def copy(self, **kwds):
-        """return a (deep) copy of ourselfs
-
-        :param kwds: override given properties
-        """
+    def copy(self):
+        """return a (deep) copy of ourselfs"""
         res = type(self)()
         res.name = self.name
         res.func = self.func
         res.init(self.propertyValues)
-        res.init(kwds)
         if res.argument:
             res.argument = res.argument.copy()
         if res.result:
@@ -435,6 +424,8 @@ class Command(Accessible):
         if not callable(value):
             raise ProgrammingError('%s = %r is overriding a Command' % (self.name, value))
         self.func = value
+        if value.__doc__:
+            self.description = inspect.cleandoc(value.__doc__)
 
     def merge(self, merged_properties):
         """merge with inherited properties