How to use the node-opcua-basic-types.coerceInt32 function in node-opcua-basic-types

public _setValue(value: Int64) {

        // check that value is in bound
        if (!this._isValueInRange(coerceInt32(value))) {
            throw new Error("UAMultiStateValueDiscrete#_setValue out of range " + value);
        }

        const dataType = this._getDataType();
        if (dataType === DataType.Int64 || dataType === DataType.UInt64) {
            this.setValueFromSource({ dataType, value });
        } else {
            const valueN = value[1];
            this.setValueFromSource({ dataType, value: valueN });
        }
    }

init(this: any, name: string, attrs: XmlAttributes) {
            this.obj = {};
            this.obj.isAbstract = ec.coerceBoolean(attrs.IsAbstract);

            this.obj.nodeClass = NodeClass.VariableType;
            this.obj.browseName = convertQualifiedName(attrs.BrowseName);
            this.obj.parentNodeId = attrs.ParentNodeId || null;
            this.obj.dataType = convertToNodeId(attrs.DataType) || null;

            this.obj.valueRank = ec.coerceInt32(attrs.ValueRank) || -1;
            this.obj.arrayDimensions = this.obj.valueRank === -1 ? null : stringToUInt32Array(attrs.ArrayDimensions);

            this.obj.minimumSamplingInterval =
                attrs.MinimumSamplingInterval ? parseInt(attrs.MinimumSamplingInterval, 10) : 0;

            this.obj.historizing = false;
            this.obj.nodeId = convertToNodeId(attrs.NodeId) || null;
        },
        finish(this: any) {

        const e = enumValues.findIndex((x: EnumValueType) => coerceInt32(x.value) === value);
        return !(e === -1);

init: function (name, attrs) {
            this.obj = {};

            this.obj.nodeClass = NodeClass.Variable;
            this.obj.browseName = convertQualifiedName(attrs.BrowseName);
            this.obj.parentNodeId = convertToNodeId(attrs.ParentNodeId);
            this.obj.dataType = convertToNodeId(attrs.DataType);

            this.obj.valueRank = ec.coerceInt32(attrs.ValueRank) || -1;
            this.obj.arrayDimensions = this.obj.valueRank === -1 ? null : stringToUInt32Array(attrs.ArrayDimensions);

            this.obj.minimumSamplingInterval = attrs.MinimumSamplingInterval ? parseInt(attrs.MinimumSamplingInterval) : 0;
            this.obj.minimumSamplingInterval = parseInt(this.obj.minimumSamplingInterval);


            this.obj.historizing = false;
            this.obj.nodeId = convertToNodeId(attrs.NodeId) || null;

            this.obj.accessLevel = convertAccessLevel(attrs.AccessLevel);
            this.obj.userAccessLevel = convertAccessLevel(attrs.UserAccessLevel);
        },
        finish: function () {

public checkVariantCompatibility(value: Variant): StatusCode {
        if (this.enumValues) {
            if (!this._isValueInRange(coerceInt32(value.value))) {
                return StatusCodes.BadOutOfRange;
            }
        }
        return StatusCodes.Good;
    }