Disconnect a quadrangle:
elts = doc.disconnectQuad(hexa, quad)
Disconnect an edge:
elts = doc.disconnectEdge(hexa, edge)
Disconnect edges:
elts = doc.disconnectEdges(hexas, edges)
Disconnect a vertex:
elts = doc.disconnectVertex(hexa, ver)
Operations on elts... Elements
GUI command: Disconnect elements