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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_host_template(resource_root, name, cluster_name):
 """ Lookup a host template by name in the specified cluster. @param resource_root: The root Resource object. @param name: Host template name. @param cluster_name: Cluster name. @return: An ApiHostTemplate object. @since: API v3 """

  return call(resource_root.get,
      HOST_TEMPLATE_PATH % (cluster_name, name),
      ApiHostTemplate, api_version=3)