question: answers if the column can be set to null concode_field_sep boolean key concode_elem_sep boolean nullable concode_elem_sep Object defaultValue concode_elem_sep int blockSize concode_elem_sep Type type concode_elem_sep Encoding encoding concode_elem_sep CompressionAlgorithm compressionAlgorithm concode_elem_sep CompressionType internalPbType concode_elem_sep CompressionAlgorithm compressionAlgorithm concode_elem_sep int desiredBlockSize concode_elem_sep Encoding encoding concode_elem_sep String name concode_elem_sep Object defaultValue concode_elem_sep boolean key concode_elem_sep boolean nullable concode_field_sep String getName concode_elem_sep ColumnSchemaBuilder nullable concode_elem_sep ColumnSchemaBuilder defaultValue concode_elem_sep boolean isKey concode_elem_sep EncodingType getInternalPbType concode_elem_sep CompressionType getInternalPbType concode_elem_sep ColumnSchemaBuilder encoding concode_elem_sep Object getDefaultValue concode_elem_sep Encoding getEncoding concode_elem_sep int getDesiredBlockSize concode_elem_sep CompressionAlgorithm getCompressionAlgorithm concode_elem_sep Type getType concode_elem_sep ColumnSchema build concode_elem_sep int hashCode concode_elem_sep ColumnSchemaBuilder compressionAlgorithm concode_elem_sep boolean equals concode_elem_sep ColumnSchemaBuilder desiredBlockSize concode_elem_sep String toString concode_elem_sep ColumnSchemaBuilder key
target: boolean function ( ) { return nullable ; }