Hashes the given Client ID.
hashClientId(body)
  Hashes the given Client ID.
Args:
  body: object, The request body. (required)
    The object takes the form of:
{ # JSON template for a hash Client Id request resource.
    "kind": "analytics#hashClientIdRequest",
    "clientId": "A String",
    "webPropertyId": "A String",
  }
Returns:
  An object of the form:
    { # JSON template for a hash Client Id response resource.
    "kind": "analytics#hashClientIdResponse",
    "hashedClientId": "A String",
    "clientId": "A String",
    "webPropertyId": "A String",
  }