exists?

• Class methods (1)
• new
• Instance methods (16)
• [] (<= v2.3.8)
• []= (<= v2.3.8)
• close (<= v2.3.8)
• data (<= v2.3.8)
• delete (<= v2.3.8)
• destroy
• dig (>= v6.1.3.1)
• exists?
• fetch
• keys
• load!
• replace_attributes (<= v2.3.8)
• reset (<= v2.3.8)
• reset_session_id (<= v2.3.8)
• update (<= v2.3.8)
• values

= private
= protected