setExtension method
Sets the value of a non-repeated extension field to value
.
Implementation
void setExtension(Extension extension, Object value) {
ArgumentError.checkNotNull(value, 'value');
if (_isRepeated(extension.type)) {
throw ArgumentError(_fieldSet._setFieldFailedMessage(
extension, value, 'repeating field (use get + .add())'));
}
_fieldSet._ensureExtensions()._setFieldAndInfo(extension, value);
}