code: def _from_java(jtt):
      return tmatrix(
          dtype(jtt.globalType().toString()),
          dtype(jtt.colType().toString()),
          jiterable_to_list(jtt.colKey()),
          dtype(jtt.rowType().toString()),
          jiterable_to_list(jtt.rowKey()),
          dtype(jtt.entryType().toString()),
      )
  
imports: import pprint
  from hail.typecheck import typecheck_method, sequenceof
  from hail.utils.java import escape_parsable
  from hail.expr.types import dtype, tstruct
  from hail.utils.java import jiterable_to_list
label_desc: Use image node_id 1 for calling the tmatrix obj's underlying member method code with example usage: obj._from_java(jtt) and returns: tmatrix