def exists_udf(self, name, database=None):
        return len(self.list_udfs(database=database, like=name)) > 0
Validate the path strings of installs node of type=file.
dataset/ETHPy150Open cloudera/ibis/ibis/impala/client.py/ImpalaClient.exists_udf--crossover with--dataset/ETHPy150Open google/simian/src/simian/mac/munki/plist.py/MunkiPackageInfoPlist._ValidateInstallsFilePath