Adapt for erpbrasil.edoc integration

Adapted the current library to ensure compatibility with the new erpbrasil.edoc library that is pending release. This change is on a feature branch to support the upcoming integration.

See the related PR: erpbrasil/erpbrasil.edoc#77

nfelib/nfe/ws/edoc_legacy.py

@@ -108,19 +108,31 @@ def consulta_documento(self, chave):
             xServ="CONSULTAR",
             chNFe=chave,
         )
-        return self._post(
-            raiz=raiz,
-            url=localizar_url(
+
+        # Check if the method ´_get_ws_endpoint´ exists to ensure compatibility 
+        # with different versions of the erpbrasil.edoc library.
+        if hasattr(self, '_get_ws_endpoint'):
+            url = self._get_ws_endpoint(WS_NFE_CONSULTA)
+        else:
+            # TODO: Remove this fallback in the next few months.
+            # The following block is a temporary solution to support older versions.
+            # After transitioning, remove the localizar_url method call.
+            url = localizar_url(
                 WS_NFE_CONSULTA,
                 str(self.uf),
                 self.mod,
                 int(self.ambiente)
-            ),
+            )
+
+        return self._post(
+            raiz=raiz,
+            url=url,
             operacao="nfeConsultaNF",
             classe=RetConsSitNfe,
         )
 
 
+
 class NFCeAdapter(DocumentoElectronicoAdapter, NFCe):
     pass