X509v3CertificateBuilder redundant CertIOException

[kuzjka]

It looks like CertIOException in X509v3CertificateBuilder occurs if a certificate extension can not be constructed from the encoded value.
There is an override of addExtension method which receives already created Extension object. In this case, checked CertIOException is never thrown and should be removed from the method signature.

bc-java/pkix/src/main/java/org/bouncycastle/cert/X509v3CertificateBuilder.java

Lines 219 to 234 in 9279d29

	/**
	* Add a given extension field for the standard extensions tag (tag 3).
	*
	* @param extension the full extension value.
	* @return this builder object.
	* @throws CertIOException if there is an issue with the new extension value.
	* @throws IllegalArgumentException if the OID oid has already been used.
	*/
	public X509v3CertificateBuilder addExtension(
	Extension extension)
	throws CertIOException
	{
	extGenerator.addExtension(extension);
	return this;
	}