keep

• Class methods (1)
• new (<= v2.3.8)
• Instance methods (10)
• []= (<= v2.3.8)
• discard (<= v2.3.8)
• keep (<= v2.3.8)
• merge! (<= v2.3.8)
• now (<= v2.3.8)
• replace (<= v2.3.8)
• store (<= v2.3.8)
• sweep (<= v2.3.8)
• update (<= v2.3.8)
• use (<= v2.3.8)

= private
= protected