src/main/java/org/apache/commons/validator/UrlValidator.java [273:293]:
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            return false;
        }

        return true;
    }

    /**
     * Validate scheme. If schemes[] was initialized to a non null,
     * then only those scheme's are allowed.  Note this is slightly different
     * than for the constructor.
     * @param scheme The scheme to validate.  A <code>null</code> value is considered
     * invalid.
     * @return true if valid.
     */
    protected boolean isValidScheme(final String scheme) {
        if (scheme == null) {
            return false;
        }

        if (!SCHEME_PATTERN.matcher(scheme).matches()) {
            return false;
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src/main/java/org/apache/commons/validator/routines/UrlValidator.java [337:358]:
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            return false;
        }

        return true;
    }

    /**
     * Validate scheme. If schemes[] was initialized to a non null,
     * then only those schemes are allowed.
     * Otherwise the default schemes are "http", "https", "ftp".
     * Matching is case-blind.
     * @param scheme The scheme to validate.  A <code>null</code> value is considered
     * invalid.
     * @return true if valid.
     */
    protected boolean isValidScheme(final String scheme) {
        if (scheme == null) {
            return false;
        }

        if (!SCHEME_PATTERN.matcher(scheme).matches()) {
            return false;
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