Method constructor

src/mathMLTree.ts:53–62

(
        type: MathNodeType,
        children?: MathDomNode[],
        classes?: string[]
    )

    classes: string[];

    constructor(
        type: MathNodeType,
        children?: MathDomNode[],
        classes?: string[]
    ) {
        this.type = type;
        this.attributes = {};
        this.children = children || [];
        this.classes = classes || [];
    }

    /**
     * Sets an attribute on a MathML node. MathML depends on attributes to convey a