@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getAssociationId() != null)
            sb.append("AssociationId: ").append(getAssociationId()).append(",");
        if (getMergedApiIdentifier() != null)
            sb.append("MergedApiIdentifier: ").append(getMergedApiIdentifier()).append(",");
        if (getDescription() != null)
            sb.append("Description: ").append(getDescription()).append(",");
        if (getSourceApiAssociationConfig() != null)
            sb.append("SourceApiAssociationConfig: ").append(getSourceApiAssociationConfig());
        sb.append("}");
        return sb.toString();
    }
Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be
redacted from this string using a placeholder value.

@return A string representation of this object.

@see java.lang.Object#toString()
aws-java-sdk-appsync/src/main/java/com/amazonaws/services/appsync/model/UpdateSourceApiAssociationRequest.java