Generate MFHD - 866/867/868 -holding statements - elements of ther array

Purpose/Overview:
Map holdingsStatement.statement to field 866 $a
Map holdingsStatement.note to field 866 $z

Map holdingsStatementForIndexes.statement to field 867 $a
Map holdingsStatementForIndexes.note to field 867 $z

Map holdingsStatementForSupplements.statement to field 867 $a
Map holdingsStatementForSupplements.note to field 867 $z
(both indicators are empty)

Requirements/Scope:

"holdingsStatements": [
        {
          "statement": "v.1-13(1966-1978)",
          "note": "public note"
        }
      ]

will produce: 866 $a v.1-13(1966-1978) $z public note

"holdingsStatementsForIndexes": [
        {
          "statement": "v.1-8(1968-1975)",
          "note": "note for indexes"
        }
      ]

will produce: 868 $a "v.1-8(1968-1975)" $z note for indexes

"holdingsStatementsForSupplements": [
        {
          "statement": "v.1-8(1968-1975)",
          "note": "bound with v.8(1975) (public)"
        }
      ]

will produce: 868 $a "v.1-8(1968-1975)" $z bound with v.8(1975) (public)

Approach:

Acceptance criteria:

• Record contains correctly mapped holdings statement in MFHD
• If multiple entries are present, MARC field is repeated
• If no entries for those fields in inventor holdings, the MFHD field is skipped