this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      copyright license to reproduce, prepare Derivative Works of,
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pkg database/sql/driver, type Conn interface { Begin, Close, Prepare }
pkg database/sql/driver, type Conn interface, Begin() (Tx, error)
pkg database/sql/driver, type Conn interface, Close() error
pkg database/sql/driver, type Conn interface, Prepare(string) (Stmt, error)
pkg database/sql/driver, type Driver interface { Open }