public Builder setSourceProvider(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      sourceProvider_ = value;
      bitField0_ |= 0x00000010;
      onChanged();
      return this;
    }
<pre>
Source provider is the author of a public blueprint. e.g. Google, vendors
</pre>

<code>string source_provider = 5;</code>

@param value The sourceProvider to set.
@return This builder for chaining.
java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/PublicBlueprint.java