class_docstr: CsvSchemaBuilder is for building a :class:`~CsvSchema`, corresponding to Java
  ``com.fasterxml.jackson.dataformat.csv.CsvSchema.Builder`` class.
  
  .. versionadded:: 1.16.0
docstr: Delete all columns in the schema.
docstr_tok: ["Delete","all","columns","in","the","schema","."]
code: def clear_columns(self):
      """
      Delete all columns in the schema.
      """
      self._j_schema_builder.clearColumns()
      self._fields.clear()
      return self
  
imports: from typing import Optional, TYPE_CHECKING
  from pyflink.common.serialization import BulkWriterFactory, RowDataBulkWriterFactory, SerializationSchema, DeserializationSchema
  from pyflink.common.typeinfo import TypeInformation
  from pyflink.datastream.connectors.file_system import StreamFormat
  from pyflink.java_gateway import get_gateway
label_desc: Use image node_id 8 for calling the CsvSchemaBuilder obj's underlying member method code with example usage: obj.clear_columns() and returns: self