An array of identities that will be granted the privilege in the role. For more details on format and restrictions see https://cloud.google.com/billing/reference/rest/v1/Policy#Binding Each entry can have one of the following values:
The role/permission that will be granted to the members. See the IAM Roles documentation for a complete list of roles. Note that custom roles must be of the format [projects|organizations]/{parent-name}/roles/{role-name}.