IrFile /in.kt
  IrFunction public fun test1(/*0*/ a: kotlin.Any, /*1*/ x: kotlin.collections.Collection<kotlin.Any>): kotlin.Boolean
    IrExpressionBody
      BLOCK type=<no-type> hasResult=false operator=null
        RETURN type=<no-type>
          CALL .contains type=kotlin.Boolean operator=IN
            $this: GET_VAR x type=kotlin.collections.Collection<kotlin.Any> operator=null
            element: GET_VAR a type=kotlin.Any operator=null
  IrFunction public fun test2(/*0*/ a: kotlin.Any, /*1*/ x: kotlin.collections.Collection<kotlin.Any>): kotlin.Boolean
    IrExpressionBody
      BLOCK type=<no-type> hasResult=false operator=null
        RETURN type=<no-type>
          CALL .NOT type=kotlin.Boolean operator=EXCL
            arg0: CALL .contains type=kotlin.Boolean operator=NOT_IN
              $this: GET_VAR x type=kotlin.collections.Collection<kotlin.Any> operator=null
              element: GET_VAR a type=kotlin.Any operator=null
  IrFunction public fun </*0*/ T> test3(/*0*/ a: T, /*1*/ x: kotlin.collections.Collection<T>): kotlin.Boolean
    IrExpressionBody
      BLOCK type=<no-type> hasResult=false operator=null
        RETURN type=<no-type>
          CALL .contains type=kotlin.Boolean operator=IN
            $this: GET_VAR x type=kotlin.collections.Collection<T> operator=null
            element: GET_VAR a type=T operator=null
  IrFunction public fun </*0*/ T> test4(/*0*/ a: T, /*1*/ x: kotlin.collections.Collection<T>): kotlin.Boolean
    IrExpressionBody
      BLOCK type=<no-type> hasResult=false operator=null
        RETURN type=<no-type>
          CALL .NOT type=kotlin.Boolean operator=EXCL
            arg0: CALL .contains type=kotlin.Boolean operator=NOT_IN
              $this: GET_VAR x type=kotlin.collections.Collection<T> operator=null
              element: GET_VAR a type=T operator=null
