code: public void setSignerChain(X509Certificate[] signerChain) {
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
              Tr.debug(tc, "setSignerChain");
          this.signer = signerChain == null ? null : signerChain.clone();
      }
docs: Set the signer chain on this context to the input value.
  
  @param signerChain