public void storeMemberSig(String memID, PGPSignature sig) {
   if (memberSig.containsKey(memID)) {
     memberSig
         .get(memID)
         .addSignature(sig, TrustRelation.generateRelationMemberSigtext(this, memID));
     return;
   } else {
     memberSig.put(
         memID,
         new TrustSignatures(
             sig,
             TrustRelation.generateRelationMemberSigtext(this, memID),
             TrustSignatures.SIG_VALID));
   }
 }
 public static String generateRelationMemberSigtext(TrustRelation trust, String memID) {
   Relation r = (Relation) trust.getOsmPrimitive();
   List<RelationMember> members = r.getMembers();
   RelationMember member = null;
   for (RelationMember m : members) {
     if (TrustOsmPrimitive.createUniqueObjectIdentifier(m.getMember()).equals(memID)) {
       member = m;
       break;
     }
   }
   if (member == null) return "";
   String sigtext = "RelID=" + r.getUniqueId() + "\n";
   sigtext +=
       TrustOsmPrimitive.createUniqueObjectIdentifier(member.getMember()) + "," + member.getRole();
   return sigtext;
 }