isRecordFieldOpt/9

• 'NIL'|package_name
• 'NIL'|component_type_identifier
• 'NIL'|component_implementation_identifier
• 'NIL'|property_owner_identifier [capitalized]
• property_identifier [capitalized]
• (assignment list) element_number (integer)
• (record field) identifier [capitalized]
• (record field) value [capitalized]
• line number (integer)

notes:

• similar to isRecordField/9 with capitalized owner id, property id, field id and field value