createInvitation
@FormUrlEncoded
@POST(value = "organizations/{organization_id}/invitations")
Create an invitation for a user to join an organization.
Parameters
organizationId
The id of the organization for which the invitation will be created
emailAddress
The email address the invitation will be sent to.
role
The role that will be assigned to the user after joining. This can be one of the predefined roles "org:admin", "org:member" or a custom role.