public SigningJob withSigningMaterial(SigningMaterial signingMaterial) {
        setSigningMaterial(signingMaterial);
        return this;
    }
<p>
A <code>SigningMaterial</code> object that contains the Amazon Resource Name (ARN) of the certificate used for
the signing job.
</p>

@param signingMaterial
       A <code>SigningMaterial</code> object that contains the Amazon Resource Name (ARN) of the certificate used
       for the signing job.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-signer/src/main/java/com/amazonaws/services/signer/model/SigningJob.java