ManagementType(value)[Output Only] The resource that configures and manages this interface. - MANAGED_BY_USER is the default value and can be managed directly by users. - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
Values: UNDEFINED_MANAGEMENT_TYPE (0): A value indicating that the enum field is not set. MANAGED_BY_ATTACHMENT (458926411): The interface is automatically created for PARTNER type InterconnectAttachment, Google will automatically create/update/delete this interface when the PARTNER InterconnectAttachment is created/provisioned/deleted. This type of interface cannot be manually managed by user. MANAGED_BY_USER (317294067): Default value, the interface is manually created and managed by user.