code: def proxy_label_for(label: str) -> str:
          
          label_java = _VertexLabel(label).unwrap()
          proxy_label_java = k.jvm_view().SequenceBuilder.proxyLabelFor(label_java)
          return proxy_label_java.getQualifiedName()
docs: >>> Sequence.proxy_label_for("foo")
          'proxy_for.foo'