Creates a new {@link SeparatorAttributeDescriptor} super(label /* xmlLocalName */, null /* nsUri */);
super(label /* xmlLocalName */, null /* nsUri */);
returnA new {@link UiAttributeNode} linked to this descriptor or null if this attribute has no user interface. return new UiSeparatorAttributeNode(this, uiParent);
return new UiSeparatorAttributeNode(this, uiParent);