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create_ext 

        # OpenSSL::X509::ExtensionFactory.create_ext

(from ruby core)
### Implementation from ExtensionFactory
---
    ef.create_ext(ln_or_sn, "value", critical = false) -> X509::Extension
    ef.create_ext(ln_or_sn, "critical,value")          -> X509::Extension

---

Creates a new X509::Extension with passed values. See also
x509v3_config(5).

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