agent/api/container/containertype.go
func (containerType *ContainerType) MarshalJSON() ([]byte, error) {
	if containerType == nil {
		return []byte("null"), nil
	}

	return []byte(`"` + containerType.String() + `"`), nil
}
func (containerType *ContainerType) MarshalJSON() ([]byte, error) {
	if containerType == nil {
		return []byte("null"), nil
	}

	return []byte(`"` + containerType.String() + `"`), nil
}
// MarshalJSON overrides the logic for JSON-encoding a ContainerType object