docs: def find_dependencies(self, depslock_file_path, property_validate=True, deps_content=None):
          """
          Find all dependencies by package
          :param depslock_file_path:
          :param property_validate: for `root` packages we need check property, bad if we find packages from `lock` file,
          :param deps_content: HACK for use --dependencies-content and existed dependencies.txt.lock file
          we can skip validate part
          :return:
          """
          self._raw = [x for x in
                       self._downloader.common_parser.iter_packages_params(depslock_file_path, deps_content=deps_content)]
          self.packages = self._downloader.get_dependency_packages({'raw': self._raw},
                                                                   property_validate=property_validate)