MESH_CONNECTIVITY_SCHEMA
short long

e	Matched_mesh_connection
e	Mesh_connectivity
e	Mesh_overset_hole
e	Mismatched_donor_mesh
e	Mismatched_mesh_connection
e	Mismatched_mesh_region
d	Mismatched_region_type
e	Multiple_mesh_block
s	Sc1_mesh_connectivity
s	Sc1_mismatched_donor_mesh
s	Sc1_mismatched_mesh_connection
e	Structured_donor_mesh
e	Unstructured_donor_mesh