public DataValidationMetrics withFileLevelMessages(FileValidationMessage... fileLevelMessages) {
        if (this.fileLevelMessages == null) {
            setFileLevelMessages(new java.util.ArrayList<FileValidationMessage>(fileLevelMessages.length));
        }
        for (FileValidationMessage ele : fileLevelMessages) {
            this.fileLevelMessages.add(ele);
        }
        return this;
    }
<p>
The file-specific model training data validation messages.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setFileLevelMessages(java.util.Collection)} or {@link #withFileLevelMessages(java.util.Collection)} if
you want to override the existing values.
</p>

@param fileLevelMessages
       The file-specific model training data validation messages.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-frauddetector/src/main/java/com/amazonaws/services/frauddetector/model/DataValidationMetrics.java