code: def __init__(self, path, append, export_type, metadata, tabix):
      self.path = path
      self.append = append
      self.export_type = export_type
      self.metadata = metadata
      self.tabix = tabix
  
imports: import abc
  import json
  from hail.expr.types import hail_type
  from ..typecheck import typecheck_method, nullable, dictof, sequenceof
  from ..utils.misc import escape_str
  from .export_type import ExportType
label_desc: Use image node_id 1 to create a new MatrixVCFWriter object from inherited base classes: MatrixWriter with example: obj = MatrixVCFWriter(path, append, export_type, metadata, tabix)