presto-main/src/main/java/io/prestosql/operator/scalar/Re2JCastToRegexpFunction.java/Re2JCastToRegexpFunction/Re2JCastToRegexpFunction
class Re2JCastToRegexpFunction:    private Re2JCastToRegexpFunction(String sourceType, int dfaStatesLimit, int dfaRetries, boolean padSpaces)
    {
        super(CAST, emptyList(), emptyList(), RE2J_REGEXP.getTypeSignature(), ImmutableList.of(parseTypeSignature(sourceType, ImmutableSet.of("x"))), false);
        this.dfaStatesLimit = dfaStatesLimit;
        this.dfaRetries = dfaRetries;
        this.padSpaces = padSpaces;
    }