src/main/java/org/apache/commons/dbcp2/cpdsadapter/ConnectionImpl.java [94:111]:
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        if (isAccessToUnderlyingConnectionAllowed()) {
            return getDelegateInternal();
        }
        return null;
    }

    /**
     * Get the innermost connection, if allowed.
     *
     * @return the innermost internal connection, or null if access is not allowed.
     * @see #isAccessToUnderlyingConnectionAllowed()
     */
    @Override
    public Connection getInnermostDelegate() {
        if (isAccessToUnderlyingConnectionAllowed()) {
            return super.getInnermostDelegateInternal();
        }
        return null;
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src/main/java/org/apache/commons/dbcp2/managed/ManagedConnection.java [132:147]:
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        if (isAccessToUnderlyingConnectionAllowed()) {
            return getDelegateInternal();
        }
        return null;
    }

    //
    // The following methods can't be used while enlisted in a transaction
    //

    @Override
    public Connection getInnermostDelegate() {
        if (isAccessToUnderlyingConnectionAllowed()) {
            return super.getInnermostDelegateInternal();
        }
        return null;
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