junit-servers-core/src/main/java/com/github/mjeanroy/junit/servers/client/HttpHeader.java
public static HttpHeader header(String name, String value) {
		return new HttpHeader(name, singletonList(value));
	}
public static HttpHeader header(String name, String value) {
		return new HttpHeader(name, singletonList(value));
	}
Create a header with a single value.

@param name Header name, must not be blank.
@param value Header value.
@return Header.
@throws NullPointerException If {@code name} or {@code value} are {@code null}.
@throws IllegalArgumentException If {@code name} is blank.