code: function (schemaAddon) {
      var extendedSchema;
      // Clone base schema.
      extendedSchema = utils.extend({}, components[this.name].schema);
      // Extend base schema with new schema chunk.
      utils.extend(extendedSchema, schemaAddon);
      this.schema = processSchema(extendedSchema);
      this.el.emit('schemachanged', this.evtDetail);
    }
docs: Extend schema of component given a partial schema.
  
  Some components might want to mutate their schema based on certain properties.
  e.g., Material component changes its schema based on `shader` to account for different
  uniforms
  
  @param {object} schemaAddon - Schema chunk that extend base schema.