setDefaultCursor (cursor, feature) {
    if (!this.$Map) return;
    const element = this.$Map.getTargetElement()
    if (feature) {
      if (element.style.cursor !== cursor) {
        this.previousCursor_ = element.style.cursor
        element.style.cursor = cursor
      }
    } else if (this.previousCursor_ !== undefined) {
      element.style.cursor = this.previousCursor_
      this.previousCursor_ = undefined
    }
  }
set map cursor
@param cursor
@param feature