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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _transform_filter_to_sql(filter_block, node, context):
 """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. """

    expression = filter_block.predicate
    return _expression_to_sql(expression, node, context)