public Metadata getCommonMet() {
PGEGroup commonMetGroup = this.conf.getPgeSpecificGroups().get(
COMMON_METADATA_GROUP);
Metadata met = new Metadata();
for (String scalarName : commonMetGroup.getScalars().keySet()) {
PGEScalar scalar = commonMetGroup.getScalar(scalarName);
met.addMetadata(scalar.getName(), PathUtils.replaceEnvVariables(scalar
.getValue()));
}
for (String vecName : commonMetGroup.getVectors().keySet()) {
PGEVector vec = commonMetGroup.getVector(vecName);