How to use the scratch-vm/src/extension-support/block-type.EVENT function in scratch-vm

this.setPreviousStatement(true);
            this.setNextStatement(!blockInfo.isTerminal);
            break;
        case BlockType.REPORTER:
            this.setOutput(true);
            this.setOutputShape(ScratchBlocks.OUTPUT_SHAPE_ROUND);
            if (!blockInfo.disableMonitor) {
                this.setCheckboxInFlyout(true);
            }
            break;
        case BlockType.BOOLEAN:
            this.setOutput(true);
            this.setOutputShape(ScratchBlocks.OUTPUT_SHAPE_HEXAGONAL);
            break;
        case BlockType.HAT:
        case BlockType.EVENT:
            this.setOutputShape(ScratchBlocks.OUTPUT_SHAPE_SQUARE);
            this.setNextStatement(true);
            break;
        }

        if (blockInfo.color1 || blockInfo.color2 || blockInfo.color3) {
            // `setColour` handles undefined parameters by adjusting defined colors
            this.setColour(blockInfo.color1, blockInfo.color2, blockInfo.color3);
        }

        // Layout block arguments
        // TODO handle E/C Blocks
        const blockText = blockInfo.text;
        const args = [];
        let argCount = 0;
        const scratchBlocksStyleText = blockText.replace(/\[(.+?)]/g, (match, argName) => {