pyiceberg/table/inspect.py [102:122]:
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        schema = self.tbl.metadata.schema()

        readable_metrics_struct = []

        def _readable_metrics_struct(bound_type: PrimitiveType) -> pa.StructType:
            pa_bound_type = schema_to_pyarrow(bound_type)
            return pa.struct(
                [
                    pa.field("column_size", pa.int64(), nullable=True),
                    pa.field("value_count", pa.int64(), nullable=True),
                    pa.field("null_value_count", pa.int64(), nullable=True),
                    pa.field("nan_value_count", pa.int64(), nullable=True),
                    pa.field("lower_bound", pa_bound_type, nullable=True),
                    pa.field("upper_bound", pa_bound_type, nullable=True),
                ]
            )

        for field in self.tbl.metadata.schema().fields:
            readable_metrics_struct.append(
                pa.field(schema.find_column_name(field.field_id), _readable_metrics_struct(field.field_type), nullable=False)
            )
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pyiceberg/table/inspect.py [531:550]:
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        schema = self.tbl.metadata.schema()
        readable_metrics_struct = []

        def _readable_metrics_struct(bound_type: PrimitiveType) -> pa.StructType:
            pa_bound_type = schema_to_pyarrow(bound_type)
            return pa.struct(
                [
                    pa.field("column_size", pa.int64(), nullable=True),
                    pa.field("value_count", pa.int64(), nullable=True),
                    pa.field("null_value_count", pa.int64(), nullable=True),
                    pa.field("nan_value_count", pa.int64(), nullable=True),
                    pa.field("lower_bound", pa_bound_type, nullable=True),
                    pa.field("upper_bound", pa_bound_type, nullable=True),
                ]
            )

        for field in self.tbl.metadata.schema().fields:
            readable_metrics_struct.append(
                pa.field(schema.find_column_name(field.field_id), _readable_metrics_struct(field.field_type), nullable=False)
            )
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