getModelMarkers not working to get list of errors

I’m trying to get list of validation errors generated by monaco editor and do some custom operations, my current implementation is working but it’s not an ideal solution, I’m looking for something like where i can use getModelMarkers instead of setModelMarkers which i’m using currently shown below.

updateEditorText(val) {
            const setModelMarkers = monaco.editor.setModelMarkers;
            monaco.editor.setModelMarkers = (model, owner, markers) => {
                debugger;
                setModelMarkers.call(monaco.editor, model, owner, markers);
                if (markers.length === 0) {
                    this.containsValidationErrors = false;
                    this.setJsonText(val);
                } else {
                    this.containsValidationErrors = true;
                }
            };
        },

I found we can do like

monaco.editor.getModelMarkers({}).map(m => m.message).join(', ')

but when i try to use it in my function above instead of setModelMarkers it does’nt work and throws errors. Please suggest How can i use monaco.editor.getModelMarkers