code: func DateTimeColumn(name string, nullable NullableColumn) NonAliasColumn {
  	if !validIdentifierName(name) {
  		panic("Invalid column name in datetime column")
  	}
  	dc := &dateTimeColumn{}
  	dc.name = name
  	dc.nullable = nullable
  	return dc
  }
docs: // Representation of DateTime columns
  // This function will panic if name is not valid