presto-main/src/main/java/io/prestosql/operator/scalar/ArrayToJsonCast.java/ArrayToJsonCast/ArrayToJsonCast
class ArrayToJsonCast:    private ArrayToJsonCast()
    {
        super(OperatorType.CAST,
                ImmutableList.of(castableToTypeParameter("T", JSON.getTypeSignature())),
                ImmutableList.of(),
                JSON.getTypeSignature(),
                ImmutableList.of(arrayType(new TypeSignature("T"))),
                false);
    }