code: def _transform_filter_to_sql(filter_block, node, context):
      
      expression = filter_block.predicate
      return _expression_to_sql(expression, node, context)
docs: Transform a Filter block to its corresponding SQLAlchemy expression.
  
      Args:
          filter_block: Filter, the Filter block to transform.
          node: SqlNode, the node Filter block applies to.
          context: CompilationContext, global compilation state and metadata.
  
      Returns:
          Expression, SQLAlchemy expression equivalent to the Filter.predicate expression.