// Returns TLorentzVector with momentum of the cluster. Only valid for clusters
// identified as photons or pi0 (overlapped gamma) produced on the vertex
//Vertex can be recovered with esd pointer doing:
// Returns TLorentzVector with momentum of the cluster. Only valid for clusters
// identified as photons or pi0 (overlapped gamma) produced on the vertex
//Vertex can be recovered with esd pointer doing: