@Override
        public Builder source(SourceLocation source) {
            return (Builder) super.source(source);
        }
Removes a member by name.

<p>Note that removing a member that was added by a mixin results in
an inconsistent model. It's best to use ModelTransform to ensure
that the model remains consistent when removing members.

@param member Member name to remove.
@return Returns the builder.
smithy-model/src/main/java/software/amazon/smithy/model/shapes/EnumShape.java