if (includeFileState.getIncludedBy() == null) {
                        encoder.writeBoolean(false);
                    } else {
                        encoder.writeBoolean(true);
                        hashSerializer.write(encoder, includeFileState.getIncludedBy());
                    }
                    hashSerializer.write(encoder, includeFileState.getResolvedTo());

         * The build path of the build that caused this build to be included.
         *
         * Null for the root build.
         *
         * @since 4.10
         */
        @Nullable
        String getIncludedBy();
    }

    public interface Result {
    }

        this.includedBy = includedBy;
        this.resolvedTo = resolvedTo;
    }

    public String getIncludePath() {
        return includePath;
    }

    @Nullable
    public HashCode getIncludedBy() {
        return includedBy;
    }

    public HashCode getResolvedTo() {
        return resolvedTo;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {

                    public String getBuildPath() {
                        return gradle.getIdentityPath().toString();
                    }

                    @Override
                    public String getIncludedBy() {
                        return fromBuild == null ? null : fromBuild.getBuildPath().toString();
                    }
                });
        }
    }

            includes.put(fileHash, sourceFile);
            for (IncludeFileEdge includeFileEdge : previousState.getEdges()) {
                File includedFrom = includeFileEdge.getIncludedBy() != null ? includes.get(includeFileEdge.getIncludedBy()) : null;
                SourceIncludesResolver.IncludeFile includeFile = sourceIncludesResolver.resolveInclude(includedFrom, includeFileEdge.getIncludePath());

                final HashCode hash = state.getHash();
                List<String> headers = new ArrayList<>();
                for (IncludeFileEdge edge : state.getEdges()) {
                    if (hash.equals(edge.getIncludedBy())) {
                        headers.add(edge.getIncludePath());
                    }
                }
                String header = spec.getPreCompiledHeader();