public Builder clearColumnNumber() {
        bitField0_ = (bitField0_ & ~0x00000010);
        columnNumber_ = 0L;
        onChanged();
        return this;
      }
<pre>
The column number where the function call appears, if available.
This is important in JavaScript because of its anonymous functions.
</pre>

<code>int64 column_number = 5;</code>

@return This builder for chaining.
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/StackTrace.java