public ProjectSource withSourceIdentifier(String sourceIdentifier) {
        setSourceIdentifier(sourceIdentifier);
        return this;
    }
<p>
An identifier for this project source. The identifier can only contain alphanumeric characters and underscores,
and must be less than 128 characters in length.
</p>

@param sourceIdentifier
       An identifier for this project source. The identifier can only contain alphanumeric characters and
       underscores, and must be less than 128 characters in length.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-codebuild/src/main/java/com/amazonaws/services/codebuild/model/ProjectSource.java