this.shellPath = shellPath;
    }

    /**
     * Gets the contents of the shell script to execute under the shell
     * returned by {@link #getShellPath()}.
     */
    @Nullable
    public String getShellScript() {
        return shellScript;
    }

    /**
     * Sets the contents of the script to execute.
     */
    public void setShellScript(String shellScript) {
        this.shellScript = shellScript;
    }