# File lib/rdf/redland/schemas/rdfs.rb, line 49 def add_label(a_label,lang=nil) label = Literal.new(a_label,lang) labels = self.get_properties(RDFS_LABEL) do |a_label| if a_label.language == lang self.model.delete(self,RDFS_LABEL,a_label) end end self.add_property(RDFS_LABEL,label) return self end