https://mofem.eng.gla.ac.uk/structOpFluxRhsImpl_3_01ElasticExample_1_1SpringBcType_3_01BLOCKSET_01_4_00_011_00_01FIELD__DIM_e74dbab2e2ef6b9b168ed58cf5f6eeae.html
MoFEM: OpFluxRhsImpl ElasticExample::SpringBcType BLOCKSET , 1, FIELD_DIM, A, GAUSS, EleOp ...
mofemblockset