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Jamal module for Programmatic Extension

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package javax0.jamal.prog.commands;

import javax0.jamal.api.BadSyntax;

import java.util.Objects;

public class Constant extends Expression {
    private final String value;

    public Constant(final String value) {
        this.value = Objects.requireNonNull(value);
    }

    @Override
    public String execute(final Context ctx) throws BadSyntax {
        ctx.step();
        return value;
    }
}