POST   /V1/returns/:id/tracking-numbers
DELETE /V1/returns/:id/tracking-numbers/:trackId
GET    /V1/returns/:id
DELETE /V1/returns/:id
POST   /V1/returns/:id/comments
POST   /V1/returns
PUT    /V1/returns/:id
GET    /V1/returns/:id/comments
GET    /V1/returns
GET    /V1/returnsAttributeMetadata/:attributeCode
GET    /V1/returnsAttributeMetadata/form/:formCode
GET    /V1/returnsAttributeMetadata
GET    /V1/returnsAttributeMetadata/custom
GET    /V1/returns/:id/tracking-numbers
GET    /V1/returns/:id/labels
