   @class Neo4jDB
   @url http://neo4j.com/docs/2.2.5/rest-api-schema-constraints.html#rest-api-drop-constraint
   @param {String} label - Label name
-  @param {String} key - Keys
+  @param {String} key - Key
   @param {String} type - Constraint type, default `uniqueness`
   @returns {[]} - Empty array
   ###

    @__batch 
      method: 'GET'
      to: @__service.constraints.endpoint + '/' + params.join '/'
    , undefined, false, true
  @url http://neo4j.com/docs/2.2.5/rest-api-schema-constraints.html#rest-api-get-all-constraints-for-a-label
  @url http://neo4j.com/docs/2.2.5/rest-api-schema-constraints.html#rest-api-get-all-constraints
  @param {String} label - Label name
  @param {String} key - Key
  @param {String} type - Constraint type, default `uniqueness`
  @returns {[Object]}
  ###
