code: public Relationship createRelationshipForEmbeddedAssociation(GraphDatabaseService executionEngine, AssociationKey associationKey, EntityKey embeddedKey) {
  		String query = initCreateEmbeddedAssociationQuery( associationKey, embeddedKey );
  		Object[] queryValues = createRelationshipForEmbeddedQueryValues( associationKey, embeddedKey );
  		return executeQuery( executionEngine, query, queryValues );
  	}
docs: Give an embedded association, creates all the nodes and relationships required to represent it.
  It assumes that the entity node containing the association already exists in the db.
  
  @param executionEngine the {@link GraphDatabaseService} to run the query
  @param associationKey the {@link AssociationKey} identifying the association
  @param embeddedKey the {@link EntityKey} identifying the embedded component
  @return the created {@link Relationship} that represents the association