public Builder mergeFrom(com.google.cloud.vision.v1.Block other) {
      if (other == com.google.cloud.vision.v1.Block.getDefaultInstance()) return this;
      if (other.hasProperty()) {
        mergeProperty(other.getProperty());
      }
      if (other.hasBoundingBox()) {
        mergeBoundingBox(other.getBoundingBox());
      }
      if (paragraphsBuilder_ == null) {
        if (!other.paragraphs_.isEmpty()) {
          if (paragraphs_.isEmpty()) {
            paragraphs_ = other.paragraphs_;
            bitField0_ = (bitField0_ & ~0x00000004);
          } else {
            ensureParagraphsIsMutable();
            paragraphs_.addAll(other.paragraphs_);
          }
          onChanged();
        }
      } else {
        if (!other.paragraphs_.isEmpty()) {
          if (paragraphsBuilder_.isEmpty()) {
            paragraphsBuilder_.dispose();
            paragraphsBuilder_ = null;
            paragraphs_ = other.paragraphs_;
            bitField0_ = (bitField0_ & ~0x00000004);
            paragraphsBuilder_ =
                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders
                    ? getParagraphsFieldBuilder()
                    : null;
          } else {
            paragraphsBuilder_.addAllMessages(other.paragraphs_);
          }
        }
      }
      if (other.blockType_ != 0) {
        setBlockTypeValue(other.getBlockTypeValue());
      }
      if (other.getConfidence() != 0F) {
        setConfidence(other.getConfidence());
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }
<pre>
Logical element on the page.
</pre>

Protobuf type {@code google.cloud.vision.v1.Block}
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/Block.java