# Cloud Functions API . projects . locations . runtimes

## Instance Methods

Close httplib2 connections.

Returns a list of runtimes that are supported for the requested project.

### Method Details

`close()`

    Close httplib2 connections.

`list(parent, filter=None, x__xgafv=None)`

    Returns a list of runtimes that are supported for the requested project.

    Args:
      parent: string, Required. The project and location from which the runtimes should be listed, specified in the format `projects/*/locations/*` (required)
      filter: string, The filter for Runtimes that match the filter expression, following the syntax outlined in https://google.aip.dev/160.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Response for the `ListRuntimes` method.
      "runtimes": [ # The runtimes that match the request.
        { # Describes a runtime and any special information (e.g., deprecation status) related to it.
          "displayName": "A String", # The user facing name, eg 'Go 1.13', 'Node.js 12', etc.
          "environment": "A String", # The environment for the runtime.
          "name": "A String", # The name of the runtime, e.g., 'go113', 'nodejs12', etc.
          "stage": "A String", # The stage of life this runtime is in, e.g., BETA, GA, etc.
          "warnings": [ # Warning messages, e.g., a deprecation warning.
            "A String",
          ],
        },
      ],
    }