docs: function _getNode(nodePath, extendedConfiguration) {
      checkIsString('nodePath', nodePath);
      if (!entitiesMap.hasIn(nodePath.split(SEPARATOR))) {
          console.warn(`
              It seems the definition your are trying to use does not exists in the entity definitions of your project.
              The definition you want is ${nodePath} and the definition map is:
              `, entitiesMap.toJS()
          );
          throw new Error('Wrong definition path given, see waning for more details');
      }
      let conf = entitiesMap.getIn(nodePath.split(SEPARATOR));
      if (extendedConfiguration) {
          checkIsObject(extendedConfiguration);
          conf = conf.mergeDeep(extendedConfiguration);
      }
      return conf;
  }