Project sessions skills
A skill linked to a project session.

GET /v2/project_sessions_skills
Return all the project sessions skills

GET /v2/project_sessions/:project_session_id/project_sessions_skills
Return all the project sessions skills of the given Project session

GET /v2/skills/:skill_id/project_sessions_skills
Return all the project sessions skills of the given Skill

GET /v2/project_sessions_skills/:id
Get a project sessions skill

GET /v2/project_sessions/:project_session_id/project_sessions_skills/:id
Get a project sessions skill of the given Id, associated with the given Project session